crypto/evp/e_cast.c

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include "internal/cryptlib.h"
  12
  13 #ifndef OPENSSL_NO_CAST
  14 # include <openssl/evp.h>
  15 # include <openssl/objects.h>
  16 # include "internal/evp_int.h"
  17 # include <openssl/cast.h>
  18
  19 static int cast_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  20                          const unsigned char *iv, int enc);
  21
  22 typedef struct {
  23     CAST_KEY ks;
  24 } EVP_CAST_KEY;
  25
  26 # define data(ctx)       EVP_C_DATA(EVP_CAST_KEY,ctx)
  27
  28 IMPLEMENT_BLOCK_CIPHER(cast5, ks, CAST, EVP_CAST_KEY,
  29                        NID_cast5, 8, CAST_KEY_LENGTH, 8, 64,
  30                        EVP_CIPH_VARIABLE_LENGTH, cast_init_key, NULL,
  31                        EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)
  32
  33 static int cast_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  34                          const unsigned char *iv, int enc)
  35 {
  36     CAST_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), key);
  37     return 1;
  38 }
  39
  40 #endif